James Spilker

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James Spilker
Spilker in 2013
Born	(1933-08-04)August 4, 1933
Died	September 24, 2019(2019-09-24) (aged 86)
Occupation(s)	Engineer, professor
Known for	Principal architect of the Global Positioning System

James Julius Spilker Jr. (August 4, 1933 – September 24, 2019) was an American engineer and a consulting professor in the aeronautics and astronautics department at Stanford University. He was one of the principal architects of the Global Positioning System (GPS). He was the co-founder of the space communications company Stanford Telecommunications, and later was the executive chairman of AOSense Inc., Sunnyvale, CA.